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The oldest evidence of brooding in a Devonian blastoid reveals the evolution of new reproductive strategies in early echinoderms
dc.contributor.authorÁlvarez-Armada, Nidia
dc.contributor.authorBauer, Jennifer E.
dc.contributor.authorWaters, Johnny A.
dc.contributor.authorRahman, Imran A.
dc.date.accessioned2023-06-01T20:51:26Z
dc.date.available2024-06-01 16:51:21en
dc.date.available2023-06-01T20:51:26Z
dc.date.issued2023-05
dc.identifier.citationÁlvarez-Armada, Nidia ; Bauer, Jennifer E.; Waters, Johnny A.; Rahman, Imran A. (2023). "The oldest evidence of brooding in a Devonian blastoid reveals the evolution of new reproductive strategies in early echinoderms." Papers in Palaeontology (3): n/a-n/a.
dc.identifier.issn2056-2802
dc.identifier.issn2056-2802
dc.identifier.urihttps://hdl.handle.net/2027.42/176881
dc.description.abstractBrooding of young is a reproductive strategy observed in many extant echinoderms, but the evolutionary history of this behaviour is largely unknown due to the scarcity of examples preserved in the fossil record. Here, synchrotron x-ray tomography is used to describe an exceptionally preserved specimen of the Devonian blastoid echinoderm Hyperoblastus reimanni. The coelomic cavity appears completely preserved in a coiled arrangement partially enclosing organs associated with the digestive, haemal and axial systems. The vault region of the coelom surrounds four structures interpreted as three internally brooded larvae and a gonad. The presence of putative larvae brooded internally in this specimen sheds new light on the reproductive strategies used by blastoids, suggesting they were sexually dimorphic and that internal brooding was acquired early in the group’s history. The acquisition of brooding may have been linked to high clastic sediment influx associated with the Appalachian Orogeny, which would have been detrimental to the survival of larvae living at the soupy sediment–water interface.
dc.publisherWiley Periodicals, Inc.
dc.publisherAcademic Press
dc.subject.otherlarvae
dc.subject.otherreproduction
dc.subject.othersexual dimorphism
dc.subject.otherechinoderm
dc.subject.otherblastoid
dc.subject.othersynchrotron x-ray tomography
dc.titleThe oldest evidence of brooding in a Devonian blastoid reveals the evolution of new reproductive strategies in early echinoderms
dc.typeArticle
dc.rights.robotsIndexNoFollow
dc.subject.hlbsecondlevelEcology and Evolutionary Biology
dc.subject.hlbtoplevelScience
dc.description.peerreviewedPeer Reviewed
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/176881/1/spp21493_am.pdf
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/176881/2/spp21493.pdf
dc.identifier.doi10.1002/spp2.1493
dc.identifier.sourcePapers in Palaeontology
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dc.working.doiNOen
dc.owningcollnameInterdisciplinary and Peer-Reviewed


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